years ago when I built my first car (henry j Gasser) all i had at the time was the 3.0 gear turbo 350 and used 2nd in the 1/4! you need a stump pullin gear for the 1/8 mile , when I changed to the 5.13 dropped it from 13.0 to 11.0 just like that ,then went to blown stuff I haven't been the same since